/**
 * Layout – app shell, header, sidebar, footer, login page.
 */

/* Login page – centered card */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
  background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
  position: relative;
}

.login-card {
  width: 100%;
  max-width: 24rem;
  padding: var(--space-2xl);
  position: relative;
  z-index: 1;
  background-color: var(--color-surface);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12), 0 2px 8px rgba(0, 0, 0, 0.08);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  animation: cardSlideUp 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) backwards;
}

@keyframes cardSlideUp {
  from {
    opacity: 0;
    transform: translateY(30px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.login-logo-wrap {
  text-align: center;
  margin: calc(-1 * var(--space-2xl)) calc(-1 * var(--space-2xl)) var(--space-xl);
  padding: var(--space-xl);
  background-color: var(--color-primary);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  position: relative;
  animation: logoWrapSlideIn 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) backwards;
  animation-delay: 0.1s;
}

@keyframes logoWrapSlideIn {
  from {
    opacity: 0;
    transform: translateY(-20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.login-logo-wrap img {
  margin: 0 auto;
  max-height: 48px;
  width: auto;
  animation: logoFadeIn 0.8s ease-out backwards;
  animation-delay: 0.3s;
  transition: transform var(--duration-normal) ease;
}

.login-logo-wrap:hover img {
  transform: scale(1.05);
}

@keyframes logoFadeIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.login-logo-fallback {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-inverse);
  letter-spacing: 0.02em;
}

.login-card h1 {
  text-align: center;
  margin-bottom: var(--space-xl);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text);
  animation: fadeInUp 0.5s ease-out backwards;
  animation-delay: 0.4s;
}

.login-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.login-actions .btn {
  width: 100%;
  animation: fadeInUp 0.5s ease-out backwards;
}

.login-actions .btn-primary {
  animation-delay: 0.6s;
}

.login-actions .btn-secondary {
  animation-delay: 0.7s;
}

.login-secondary {
  margin-top: var(--space-md);
  text-align: center;
}

/* App shell */
.app-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-header {
  background: var(--color-text);
  border-bottom: none;
  padding: var(--space-md) 0;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
  position: relative;
}

.app-header-wrapper {
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.app-header-logout {
  color: var(--color-text-inverse);
  font-size: 0.9375rem;
  font-weight: 500;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  transition: background-color var(--duration-fast) ease,
    opacity var(--duration-fast) ease;
}

.app-header-logout:hover {
  background-color: rgba(255, 255, 255, 0.1);
  opacity: 1;
}

.app-header-logout .bi-power {
  font-size: 1.25rem;
  display: inline-block;
}

.app-header a {
  color: var(--color-text-inverse);
}

.app-header a:hover {
  color: var(--color-text-inverse);
  opacity: 0.9;
}

.app-header-logo {
  display: flex;
  align-items: center;
}

.app-header-logo img {
  max-height: 36px;
  width: auto;
}

.app-header-logo-fallback {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.02em;
}

.app-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
}

.app-nav {
  background-color: var(--color-surface);
  border-bottom: 2px solid var(--color-border);
  padding: 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  position: sticky;
  top: 0;
  z-index: 100;
}

.app-nav:empty {
  display: none;
}

.app-nav-list {
  display: flex;
  gap: 0;
  align-items: stretch;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.app-nav-list a {
  display: flex;
  align-items: center;
  padding: var(--space-lg) var(--space-xl);
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.9375rem;
  letter-spacing: 0.01em;
  border-bottom: 3px solid transparent;
  transition: all var(--duration-fast) ease;
  position: relative;
  text-decoration: none;
  margin-bottom: -2px;
}

.app-nav-list a::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 3px;
  background-color: var(--color-primary);
  transform: scaleX(0);
  transition: transform var(--duration-normal) ease;
}

.app-nav-list a:hover {
  color: var(--color-text);
  background-color: var(--color-bg-muted);
}

.app-nav-list a:hover::after {
  transform: scaleX(1);
}

.app-nav-list a[aria-current="page"] {
  color: var(--color-primary);
  background-color: var(--color-primary-muted);
  font-weight: 600;
}

.app-nav-list a[aria-current="page"]::after {
  transform: scaleX(1);
}

.app-nav-list a[data-logout] {
  margin-left: auto;
  color: var(--color-text-muted);
  padding-left: var(--space-2xl);
  padding-right: 0;
  border-left: 1px solid var(--color-border);
  margin-right: 0;
}

.app-nav-list a[data-logout]:hover {
  color: var(--color-error);
  background-color: rgba(239, 68, 68, 0.08);
}

.app-nav-list a[data-logout]::after {
  background-color: var(--color-error);
}

.app-main {
  flex: 1;
  padding: var(--space-xl) var(--space-xl);
  overflow-y: auto;
  background-color: var(--color-bg);
  min-height: 0;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

.app-footer {
  flex-shrink: 0;
  padding: var(--space-lg) var(--space-xl);
  border-top: 1px solid var(--color-border);
  background-color: var(--color-surface);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  text-align: center;
}

/* Page title bar */
.page-title-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.page-title-bar + p {
  margin-bottom: var(--space-lg);
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 65ch;
}

.page-title {
  margin: 0;
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
  line-height: 1.2;
}

/* Dashboard quick links */
.quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

/* Demos grid */
.demos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-lg);
}

/* Contact form container */
.contact-form-wrap {
  max-width: 36rem;
  margin-top: var(--space-xl);
}

/* Language switch (hidden by default, for future use) */
.lang-switch {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  font-size: 0.875rem;
}

.lang-switch [aria-pressed="true"] {
  font-weight: 600;
}